Punching equipment for hot galvanizing channel steel production

Abstract

The utility model discloses punching equipment for hot galvanizing channel steel production, which relates to the technical field of channel steel punching and comprises a connecting disc and a hydraulic oil cylinder, a round block at the tail end of a piston rod of the hydraulic oil cylinder is clamped with two inverted L-shaped clamping plates on an adapter plate of the connecting disc, and a high-pressure expansion clamping box is arranged on the adapter plate. The high-pressure expansion clamping box is composed of a pressure-resistant bottom box, a top cover, a guide cylinder, a sodium azide piece and a collision column, the top cover stretches out and draws back in an inner cavity of the pressure-resistant bottom box, the guide cylinder is arranged in the pressure-resistant bottom box, the sodium azide piece is arranged at the lower end of the guide cylinder, the collision column is arranged in the guide cylinder and makes contact with the top cover, the top cover makes contact with the round block, and an air hole is formed in the lower end of the guide cylinder. The piston rod of the hydraulic oil cylinder pushes the circular block to impact the clamping box to generate gas to keep the top cover away, and the follow-up top cover can compensate the gap between the circular block and the clamping groove, so that the problem that the connecting structure is stressed due to movement of the circular block can be solved, part abrasion is reduced, the service life is prolonged, equipment can move smoothly, noise is reduced, the environment is optimized, and the sealing performance of the hydraulic oil cylinder can be protected.

Description

Technical Field

[0001] The utility model relates to the technical field of channel steel punching, in particular to a punching device for producing hot-dip galvanized channel steel. Background Art

[0002] In the existing punching equipment for hot-dip galvanized channel steel production, the fixed mold often needs to be replaced due to the different sizes of channel steel and the different sizes and shapes of punched holes. In order to quickly connect the hydraulic cylinder and the fixed mold, the hydraulic cylinder piston rod and the connecting plate on the fixed mold are clamped. Generally, a fixed mold is installed in the channel steel channel of the channel steel CNC punching machine, and the round block at the end of the hydraulic cylinder piston rod is clamped in the groove formed by two inverted L-shaped clamping plates on the connecting plate adapter plate.

[0003] However, due to the processing accuracy issues of the round block and the two inverted L-shaped clamping plates and the need for easy insertion, the height of the round block is smaller than the height in the slot, which causes the round block to move slightly in the slot when the piston rod is extended and retracted. As a result, when the drill bit is subjected to force, the related connecting structure is subjected to additional stress, the wear of components is aggravated, the smoothness of movement is affected, vibration noise is generated, and the sealing performance of the hydraulic cylinder is indirectly affected. In order to solve the shortcomings of the existing technology, this paper proposes a punching equipment for hot-dip galvanized channel steel production. Utility Model Content

[0004] The main purpose of the utility model is to provide a punching device for hot-dip galvanized channel steel production, which can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A punching device for hot-dip galvanized channel steel production, comprising a connecting plate and a hydraulic cylinder, wherein a round block is coaxially fixedly connected to the end of the piston rod in the hydraulic cylinder, an adapter plate is fixedly connected to the connecting plate, and two mutually symmetrical inverted L-shaped clamping plates are fixedly mounted on the adapter plate, the round block is clamped between the two inverted L-shaped clamping plates, and a high-pressure expansion clamping box is embedded in the upper surface of the adapter plate;

[0007] The high-pressure expansion clamping box is mainly composed of a pressure-resistant bottom box, a top cover, a guide cylinder, a sodium azide sheet, and a collision column. The outer sealed top cover is telescopically installed in the inner cavity of the pressure-resistant bottom box, the guide cylinder is fixedly installed in the pressure-resistant bottom box, the sodium azide sheet is placed at the lower end of the inner cavity of the guide cylinder, the lower end of the collision column is telescopically installed in the inner cavity of the guide cylinder, the upper surface of the collision column and the inner top surface of the top cover are in contact with each other, the upper surface of the top cover and the lower surface of the round block are in contact with each other, and the lower end of the guide cylinder is connected to a number of air holes.

[0008] Preferably, a sealing ring is sealed between the outer wall of the top cover and the inner wall of the pressure-resistant bottom box.

[0009] Preferably, the cross section of the sealing ring is L-shaped, and the inner wall of the sealing ring is respectively fitted with the outer wall of the lower end of the top cover and the outer edge of the lower bottom surface of the top cover.

[0010] Preferably, the top end of the pressure-resistant bottom box is detachably connected to a limiting ring, a limiting groove is coaxially provided on the upper outer wall of the top cover, a plurality of inclined rods are fixedly installed on the lower outer wall of the limiting groove, and the inner ring of the limiting ring is telescopically installed on the limiting groove.

[0011] Preferably, the outer ring of the pressure-resistant bottom box is provided with an external thread, and the inner ring of the lower end of the limiting ring is provided with an internal thread that matches the external thread on the pressure-resistant bottom box.

[0012] Preferably, the lower end of the inner cavity of the pressure-resistant bottom box is fixedly connected to a needle valve.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The utility model uses the piston rod in the hydraulic cylinder to push the round block to hit the high-pressure expansion clamping box, generating gas to push the top cover away. In subsequent work, the top cover can compensate for the gap between the round block and the two inverted L-shaped clamping plates to form a slot, avoiding micro-movement. Based on this, on the one hand, it solves the problem that the connecting structure is subjected to additional stress when the drill bit is subjected to force due to the movement of the round block, reduces component wear and extends component life; on the other hand, it eliminates the micro-movement of the round block, makes the equipment move smoother, reduces vibration and noise, and optimizes the working environment; at the same time, it also indirectly avoids the adverse effects on the sealing performance of the hydraulic cylinder, ensuring stable operation of the equipment.

[0015] 2. The utility model can manually release pressure through the needle valve at the lower end of the inner cavity of the pressure-resistant bottom box. When replacing the fixed mold, it is easy to disassemble the high-pressure expansion clamping box, reducing maintenance difficulty and cost, improving maintenance efficiency, and enhancing the overall performance and practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the connection structure between the hydraulic cylinder and the adapter plate in the utility model;

[0018] Figure 3 It is an exploded view of the high-pressure expansion clamping box of the utility model;

[0019] Figure 4 It is a cross-sectional view of the high-pressure expansion clamping box of the utility model.

[0020] In the figure: 1. Channel steel CNC punching machine; 2. Fixed mold; 3. Connecting plate; 4. Hydraulic cylinder; 5. Round block; 6. Adapter plate; 7. High-pressure expansion clamping box; 701. Pressure-resistant bottom box; 702. Needle valve; 703. Guide cylinder; 704. Air hole; 705. Sodium azide sheet; 706. Inclined rod; 707. Impact column; 708. Limiting ring; 709. Anti-slip tooth groove; 710. Internal thread; 711. Sealing ring; 712. Top cover; 713. Limiting groove; 8. Inverted L-shaped clamping plate; 9. Perforation. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] like Figure 1-4 As shown, a hot-dip galvanized channel steel production punching equipment, including a channel steel CNC punching machine 1, reference Figure 1 A fixed mold 2 for guiding the movement of the channel steel is fixedly installed in the channel steel channel of the channel steel CNC punching machine 1 by four bolts. A guide directional groove with the same shape and size as the channel steel cross-section is provided in the fixed mold 2. Taking the three-sided channel steel CNC punching machine 1 as an example, three hydraulic cylinders 4 are provided in its channel steel channel, which are respectively vertically arranged on the upper side and left and right end faces of the fixed mold 2. The end of the piston rod in the hydraulic cylinder 4 is coaxially fixedly connected with a round block 5.

[0023] It should be noted that in the prior art, a connecting plate 3 is telescopically installed on the upper side and the left and right end faces of the fixed mold 2 through multiple guide columns. A number of straight groove drill bits are vertically fixedly installed on one side of the connecting plate 3, which can punch holes in the three end faces of the channel steel. An adapter plate 6 is fixedly connected to the connecting plate 3, and two mutually symmetrical inverted L-shaped clamping plates 8 are fixedly installed on the adapter plate 6. A slot for connecting the round block 5 is formed between the two inverted L-shaped clamping plates 8, and the round block 5 is clamped therebetween. However, due to the processing accuracy problems of the round block 5 and the two inverted L-shaped clamping plates 8 and the need for easy insertion, the height of the round block 5 is smaller than the height in the slot, resulting in the round block 5 moving slightly in the slot when the piston rod is extended and retracted, causing the relevant connection structure to bear additional stress when the drill bit is subjected to force, aggravating component wear, affecting the smoothness of movement, generating vibration noise and indirectly affecting the sealing performance of the hydraulic cylinder 4.

[0024] refer to Figure 2A high-pressure expansion clamping box 7 is embedded in the upper surface of the adapter plate 6, which is in the initial state when the sodium azide sheet 705 is not subjected to severe impact. The upper surface is not higher than the upper surface of the adapter plate 6, and does not affect the sliding connection of the round block 5. When the round block 5 is clamped and the piston rod in the hydraulic cylinder 4 extends out of the stamped channel steel for the first time, the piston rod will push the round block 5 to collide and squeeze the high-pressure expansion clamping box 7, so that the pressure-resistant bottom box 701 and the top cover 712 are close to each other, and the top cover 712 pushes the collision column 707 to squeeze and hit the sodium azide sheet 705. The sodium azide sheet 705 is made of sodium azide, and a large amount of gas can be generated under severe impact, which increases the gas content in the pressure-resistant bottom box 701 and the top cover 712, and pushes the top cover 712 away.

[0025] refer to Figure 3-4 The high-pressure expansion clamping box 7 is mainly composed of a pressure-resistant bottom box 701, a top cover 712, a guide cylinder 703, a sodium azide sheet 705, and a collision column 707. The pressure-resistant bottom box 701 and the top cover 712 are made of stainless steel with high high-pressure mechanical strength. The pressure-resistant bottom box 701 is embedded in the adapter plate 6 and is coaxially located directly below the round block 5. The diameter of the round block 5 is not larger than the diameter of the pressure-resistant bottom box 701. The top cover 712 is sealed and telescopically installed in the inner cavity of the pressure-resistant bottom box 701. The guide cylinder 703 is fixedly installed in the pressure-resistant bottom box 701. The sodium azide sheet 705 is placed at the lower end of the inner cavity of the guide cylinder 703. The lower end of the collision column 707 is telescopically installed in the inner cavity of the guide cylinder 703. The upper surface of the collision column 707 and the inner top surface of the top cover 712 are in contact with each other. The upper surface of the top cover 712 and the lower surface of the round block 5 are in contact with each other. The lower end of the guide cylinder 703 is connected with a number of air holes 704.

[0026] refer to Figure 3 , a sealing ring 711 is sealed between the outer wall of the top cover 712 and the inner wall of the pressure-resistant bottom box 701. Its cross-section is L-shaped, and the inner wall is respectively in contact with the outer wall of the lower end of the top cover 712 and the outer edge of the lower bottom surface of the top cover 712. The lower end of the inner cavity of the pressure-resistant bottom box 701 is fixedly connected with a needle valve 702, which is mainly used for manual pressure relief between the pressure-resistant bottom box 701 and the top cover 712, so as to facilitate the disassembly of the high-pressure expansion clamping box 7 when the fixed mold 2 is replaced later, and a through hole 9 for exposing the needle valve 702 is provided on the adapter plate 6;

[0027] The top of the pressure-resistant bottom box 701 is detachably connected to a limiting ring 708, the periphery of which is provided with a plurality of anti-slip tooth grooves 709, the outer ring of the pressure-resistant bottom box 701 is provided with an external thread, and the inner ring of the lower end of the limiting ring 708 is provided with an internal thread 710 that matches the external thread on the pressure-resistant bottom box 701 for detachable connection, the upper end outer wall of the top cover 712 is coaxially provided with a limiting groove 713, and a plurality of inclined rods 706 are fixedly installed on the lower end outer wall of the limiting groove 713, and the inner ring of the limiting ring 708 is telescopically installed on the top of the plurality of inclined rods 706 on the limiting groove 713. In the initial state, the pressure-resistant bottom box 701 and the top cover 712 are separated from each other to avoid accidental approach;

[0028] When a large amount of gas is generated to form high pressure, the top cover 712 is pressurized and lifted up, and several inclined rods 706 and the limit ring 708 squeeze each other. The inclined rod 706 can buffer the upward impact of the top cover 712. At the same time, the rising top cover 712 can compensate for the gap between the filling block 5 and the inner cavity of the card slot formed by the two inverted L-shaped card plates 8, solving the problem of movement of the block 5 when the piston rod is extended and retracted.

[0029] In this embodiment, a high-pressure expansion clamping box 7 is embedded in the adapter plate 6. When it is not hit, it is in the initial state. Its surface does not affect the sliding engagement of the round block 5 in the card groove formed by the two inverted L-shaped card plates 8 on the adapter plate 6. At this time, the pressure-resistant bottom box 701 and the top cover 712 are separated from each other. The limiting ring 708 is connected to the top of the inclined rod 706 of the upper limit groove 713 of the top cover 712 through the inner ring, preventing the two from accidentally approaching each other.

[0030] When the piston rod in the hydraulic cylinder 4 extends out of the stamped channel steel for the first time, the piston rod pushes the round block 5 to collide and squeeze the high-pressure expansion clamping box 7, so that the pressure-resistant bottom box 701 and the top cover 712 approach each other. The top cover 712 pushes the collision post 707 to squeeze and collide with the sodium azide sheet 705. The sodium azide sheet 705 generates a large amount of gas under the violent collision, which increases the gas content in the pressure-resistant bottom box 701 and the top cover 712, pushing the top cover 712 away.

[0031] In subsequent work, if a large amount of gas is generated to pressurize and lift the top cover 712, the inclined rod 706 and the limit ring 708 squeeze each other, and the inclined rod 706 buffers the upward impact of the top cover 712. At the same time, the rising top cover 712 compensates for the gap between the filling block 5 and the inner cavity of the slot, avoiding the movement of the block 5 in the slot formed between the two inverted L-shaped clamping plates 8 when the piston rod is extended and retracted. In addition, the needle valve 702 can be used for manual pressure relief between the pressure-resistant bottom box 701 and the top cover 712, which is convenient for the disassembly of the high-pressure expansion clamping box 7 when the fixed mold 2 is replaced later.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A punching device for hot-dip galvanized channel steel production, comprising a connecting plate (3) and a hydraulic cylinder (4), wherein the end of the piston rod in the hydraulic cylinder (4) is coaxially fixedly connected to a round block (5), an adapter plate (6) is fixedly connected to the connecting plate (3), and two mutually symmetrical inverted L-shaped clamping plates (8) are fixedly installed on the adapter plate (6), and the round block (5) is clamped between the two inverted L-shaped clamping plates (8), characterized in that: A high-pressure expansion clamping box (7) is embedded and installed in the upper surface of the adapter plate (6); The high-pressure expansion clamping box (7) is mainly composed of a pressure-resistant bottom box (701), a top cover (712), a guide cylinder (703), a sodium azide sheet (705), and a collision column (707). The top cover (712) is externally sealed and telescopically installed in the inner cavity of the pressure-resistant bottom box (701). The guide cylinder (703) is fixedly installed in the pressure-resistant bottom box (701). The sodium azide sheet (705) is placed at the lower end of the inner cavity of the guide cylinder (703). The lower end of the collision column (707) is telescopically installed in the inner cavity of the guide cylinder (703). The upper surface of the collision column (707) and the inner top surface of the top cover (712) are in contact with each other. The upper surface of the top cover (712) and the lower surface of the round block (5) are in contact with each other. The lower end of the guide cylinder (703) is connected to a plurality of air holes (704).

2. The punching equipment for hot-dip galvanized channel steel production according to claim 1, characterized in that: A sealing ring (711) is sealed between the outer wall of the top cover (712) and the inner wall of the pressure-resistant bottom box (701).

3. The punching equipment for hot-dip galvanized channel steel production according to claim 2, characterized in that: The cross section of the sealing ring (711) is L-shaped, and the inner wall of the sealing ring (711) is respectively fitted with the outer wall of the lower end of the top cover (712) and the outer edge of the lower bottom surface of the top cover (712).

4. The punching equipment for hot-dip galvanized channel steel production according to claim 1, characterized in that: The top end of the pressure-resistant bottom box (701) is detachably connected to a limiting ring (708); the upper outer wall of the top cover (712) is coaxially provided with a limiting groove (713); a plurality of inclined rods (714) are fixedly mounted on the lower outer wall of the limiting groove (713); and the inner ring of the limiting ring (708) is telescopically mounted on the limiting groove (713).

5. The punching equipment for hot-dip galvanized channel steel production according to claim 4, characterized in that: The outer ring of the pressure-resistant bottom box (701) is provided with an external thread, and the inner ring of the lower end of the limiting ring (708) is provided with an internal thread (710) that matches the external thread on the pressure-resistant bottom box (701).

6. The punching equipment for hot-dip galvanized channel steel production according to claim 1, characterized in that: The lower end of the inner cavity of the pressure-resistant bottom box (701) is fixedly connected to a needle valve (702).

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